In recent trading activities, the US stock market has shown a continuous downward trend, with investors adopting a relatively cautious stance. In the latest transactions, one of the key indicators of the US stock market, the Dow Jones Industrial Average index, fell by 1%, reflecting part of the market's adjustment pressure. Meanwhile, the NASDAQ Composite index saw a more significant drop of 2.48%, possibly related to a general pullback in tech stocks. Most notably, the S&P 500 index was not spared from the downward trend either, recording a 1.68% decline at closing, indicating the overall market's downside risk. The reasons for this market fluctuation are diverse, including uncertainty in economic data, changes in global pandemic conditions, and expectations about interest rate trends. In the face of such market conditions, investors need to remain vigilant, making prudent decisions to mitigate potential investment risks.